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btrfs: account as waiting for IO, while waiting fot the flush bio completion
Similar to what submit_bio_wait does, we should account for IO while waiting for a bio completion. This has marginal visible effects, flush bio is short-lived. Reviewed-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
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@ -3519,7 +3519,7 @@ static int wait_dev_flush(struct btrfs_device *device)
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return 0;
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device->flush_bio_sent = 0;
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wait_for_completion(&device->flush_wait);
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wait_for_completion_io(&device->flush_wait);
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if (bio->bi_error) {
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ret = bio->bi_error;
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